title: Nasopharyngeal carcinoma. Pattern of tumor regression after radiotherapy.
abstract: The primary tumor regression pattern of 50 patients with nasopharyngeal carcinoma was reported. The tumor regression was monitored either by indirect nasopharyngeal mirror examination and biopsy or fiberoptic endoscope and biopsy. Fiberoptic endoscope and biopsy was found to be more accurate in noting residual tumor. It is recommended that booster radiation dose to the residual primary tumors be withheld unless positive biopsy samples persist at 10 or more weeks after radiotherapy.
authors.affiliation: Department of Radiotherapy and Oncology, Queen Mary Hospital, Hong Kong.
authors.forename: J S
authors.initials: JS
authors.lastname: Sham
authors.forename: W I
authors.initials: WI
authors.lastname: Wei
authors.forename: W H
authors.initials: WH
authors.lastname: Kwan
authors.forename: C W
authors.initials: CW
authors.lastname: Chan
authors.forename: W K
authors.initials: WK
authors.lastname: Kwong
authors.forename: D
authors.initials: D
authors.lastname: Choy
mesh_terms: D001706:Biopsy; D002277:Carcinoma / Q000473:pathology / Q000532:radiotherapy* / Q000556:secondary; D004724:Endoscopy; D006801:Humans; D009303:Nasopharyngeal Neoplasms / Q000473:pathology / Q000532:radiotherapy*; D009364:Neoplasm Recurrence, Local; D009367:Neoplasm Staging; D011879:Radiotherapy Dosage; D012074:Remission Induction